Lock structure



April 12, G, Ross LOCK STRUCTURE Filed Jan. 10, 1930 I N V EN TOR. W/va/YZ. Pass A TTORNEYS.

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Patented Apr. 12, 1932 UNITED STATES,

GORDON L. ROSS, OF KANSAS CITY, MISSOURI LOCK STRUCTURE Application filed. January 10, 1930. ,Serial m5. 419,836.

This invention relates to lock structures and has for its primary object the provision of new, novel and cheaply constructed mechanism and parts for locks of various types and styles that will preclude moving the primary bolt 0f the same to the unlocked position by unauthorized persons or those other than the ones holding the key for the particular'lock within which has been placed devices made in accordance with the broad concepts of the present invention.

One of the main objects of this invention is to'provide means within a lock for serving a double purpose in connection with the pri- A still further obj ectof this invention isto' provide a novel lock structure which has a positively acting secondary lock for the pri- 80 mary bolt thereof, movable in a self-actuating manner to the effective position when the lock is carried to the locking position by the element to be secured against movement by said lock.

"An even further object of the present inventionis the provision of a means within'a lock which acts upon the primary bolt thereof to hold the same in the locked position until the manually controlled actuating means is used to move both the primary bolt and its locln'ng means to the unlocked position.

Other objects of this invention will appearv during the course of the detailed specifications, wherein but the preferred form of the invention has been shown-embodied in a lock having the conventional type of parts. The

parts made in accordance with this invention may be modified as to form and specific structure, and the materials used to make up the novel parts of this look may be stamped,

cast, pressed, orotherwise formed in a manner to render the lock structure cheap to make and efiectivein operation, as well as easy to assemble. v j I It is understood that many forms of picking'is practiced when unauthorized persons move locks of the commercial type to the unlocked positionwithout the use of a proper key. lOneof the most common, is the introduction of an'instrument of some sort to the primary bolt to move it to the unlocked position against the normal holding action of t the standard parts now used. As a result of this understanding, itfis the object oftliis invention to supply broad novel means for precludingsuchqaction. vObjects of a more important nature such as the combination of parts in an effective manner will also appear during the specification. I

Withreference at this point to the form of the invention illustrated in the'accompany ing drawings, 7 f V v 1 Figure 1 is a vertical central cross section:

. of a lock made in accordance with this invention showingthe primary bolt and its locking plunger in the locked position. w t

Fig. 2 is a horizontal cross section through the lock, taken on line II II of Fig.1, and

Fig.3 is a fragmentary side elevation of the primary bolt and plunger assembly, parts broken away for clearness. j

Like reference characters refer to similar parts of the lock throughout the several views of the drawings, and the numerals 4. and 6 indicate adoor and door casing respectively, and 8 indicates the ordinary modern'type of molding against whichthe door 4' stops when the same is in a position to be locked. The lock structure here shown 1510f the mortise type, but it is understood that any style might be constructed to embody the advantages, details and structure of the presentinvention. Thecasing 10 houses the working partsof the lock, and the same may consist of a primary bolt 12 which is actuated by a spring or the like 14 to the projected or locked position as shown in Fig. 1. The forward or looking end of primarybolt 12 has a pas-. sage 16 formed therein which communicates with an opening 18 and slot 20. Primary bolt 12 is supported for sliding movement by the ears 22 formed as a part of casing 10 as well as by the opening through the front of casing 10. Opening 24 should register with a similar hole 26'formed through strike plate 28 secured to door casing 6, and when the primary bolt of the lock is disposed in the locked position, it. should pass throughboth opening 24 and hole 26. Y A plunger 30 should be slidably mounted for reciprocating movement in ;openi ng 16, through the use of a pin 32 and slots 34 formed in the side of primary bolt 12. "As shown in Fig. 2-, the pin 32 extends beyond the sides of bolt 12 to be-engaged by-a spring 36 which constantly urges plunger 30 toward the outer end of primary bolt 12. Forming apart of plunger assembly is therearwardly and'upwardly extending arm38 which has a locking portion 40 formed thereon as illus- -trated in Figs.*1 and 3. This locking portion 40 should consist ofa plurality of lugsformed as shown'which aremoved between theen'd member 42 of primary bolt 12 and the,

lock lug 44 rigid to case l0. This action is assisted' by spring 56 carried by bolt '12. Gravity will also assist in this action, 7

In the position shown'in'the "drawings, Figs.- 1- and 12, the'lock assembly is in the locked position with the primary'bolt secured against movement by thelocking portion 40 of the plunger arm 38 which, as previously described, is pivotally connected to plunger 30' throughthe pin 32. r

As the door 4 1s being'closed, bolt 12- e11- gages strike plate28wwhich' has a member 46.

formed integrally therewith in the form of a lug which is adapted to pass into thebolt12 through the .slot'20 'asthe bolt is being disposedto the locked position throughjthe action of spring 14. .Whenj this member 46 engages theend of plungerj30, it causes it to move back into the passage '16 against the action of spring '36, and as soon asthe" looking portion 40 has reached the po'si tionbetween the en'd ofbolt12and the locklug=44,

the lugs formed on this portion 4Q will drop to the'p'osition' shown tolock the primary bolt 12 againstmovement. 'Thisaction also looks the'p l ag in t movement unfilthe ually actuated member mounted on the shaft onshaft 4831111 on-the side of, the jdoorvwhich 48;is turne'd'to-lift arm 38 through the earns 50. These cams 5 0- will hold arm 38 up out of engagement with the end of bolt 12 andaway from the lock lug 44 and theprojection 52 will travel to strike the upturned portion of bolt 12' to pull the same but of engagement withithe hole 26'formed in strike, plate 28. Thus, the manually operable means located swings inwardly movesallthe assembly to the unlocked position. Likewise, a properly formed. key might beintroduced, tlilio lgh the hole 54 to perform. the same function.

: VVhen thelocking; portion '40 is raised, the

;spring;1 4 tendinggto iorce the bolt 12 to the locked position is the strongest, and should be i'bi'furcated as shown to clear the extended portion of the plunger arm 38 when it is -operate'd. 'Sprin'g 36 is next in order of strengt tand,. t hould-be f rmed topr sen a pair} of GO ls- .one p tione 4 ach idetof the bolt 112 as illustrated ,The.

smallerleaf spring 56: is the weakestv of. the

serie of. pr ng an endstea s stgrarity in. fo c ng-l k ng p t o .4 intophic When the member .46 ha im ve Plunger :30.;along he'pass ge lfitt rmedi boltm TIh-iserrf ,1

56yields when-.thekey .Q T manuallvopetate member mounted onshaft 481s turndtqlift: locking portion 40 out of jthe locked .p.osi-..

tion.

. As shown Fig. r ke. P ete22 may e em d lig y to; ass s thelbolt .241 i s movement as I the door .4 ,is being ;closed,

H vi t s de cr bed he inv ntio lttet detailso'fwhichitisdesired nettobehmiteda xcept defi dbythe Spiritof th rbmald inve and h s op c th app nded claims, what is claimed and; desiredtdhe se cured. by LettersRatent is:

v 1 ilock, a ho low-1prim ryzbolt,t

p unger, a k..lu g.an devic 'fq .mQ mg:

id. plungenag ins sai lugaas. h pr mary bolt is. being disposedtq the locked position whereby both theprima yhole and plueger ar 0ck d.. against krelati e m vem n sai p ng be ng c rrie ent al y within-th boltgflan opening in th Oendr-O l abelma t hes d e ieo saidop ningands le ngconne tedt a lcwentiia nc lofi theseid" e c into the, bol to q e thesai 'lu ger as. id. primary. olt mwestofih 10d sition.

A 2. In lock structure, a hollow primary O ,a plung -a sociated her ifl ifbrrela tive. m v ment.- loqk luaa locking. por ion m y: h Plnn eea plate hailing; a hole. therethrough mdQPQmti g-a pam iWQ c r e y. th platea d-rpertia ly.res ric ingsaid ole. ngageable w th a d plunger IfDi mo it king por io ega nswsai zlock 1 g w h P mary blt. be ng tothelocked} ,o sit'ion, In a he a, p imarygbo tt ,plunger m l therewith-and mean memot fr cm. the, 1 0k f eng g ng .plunger,..as. th prim y rbolt l b ingd spqsedtp th lockedi P-Q it ee to moir tthe-p iilhge t t exwle keda po tiong aiimean lihclndmgp sstrikezplate:

member intersecting the path of travel of said plunger when the primary bolt is in the locked position.

4. In a look, a primary bolt, a plunger, a central longitudinal passage formed Within said primary bolt, said plunger being mounted for reciprocating movement in said passage and a member engageable With the plunger to actuate the same as the primary bolt is being disposed to the locked position, said member intersecting the path of travel of said primary bolt.

5. In a look, a primary bolt, a plunger, a central longitudinal passage formed Within said bolt, said plunger mounted for move ment Within said passage and a plunger engaging member projecting Within said passage to move said plunger as the primary bolt is being disposed to the locked position.

6. In a look, a primary bolt, a plunger, a lock lug, a plurality of locking shoulders integral With said plunger, said shoulders movable With said plunger to a position against said primary bolt and lock lug as the primary bolt is being disposed to the locked position, whereby both are locked against relative or unitary movement, said plunger housed centrally Within the primary bolt With a portion thereof projecting therebeloW, the shoulders being formed by said'projeotin portion.

In a lock structure, a primary bolt, a plunger slidably housed therein, a lock lug, a locking portion formed by said plunger, and means for moving the plunger against the lock lug as said primary bolt is being disposed to locking position to lock said primary bolt against movement, said means including a stationary strike plate member projecting into said primary bolt and engaging the said plunger therein When the structure is in the locking position.

In testimony whereof I hereunto aflix my signature. I

GORDON L. ROSS. 

